Pipe-union.



PATENTED MAR. 24, 1908.

A. G. ANDERSON.

PIPE UNION.

AYPLIGA'I'ION FILED AUG. 9. 1907.

onrrED PATENT OFFICE ANTON G. ANDERSON, OF CHICAGO, ILLINOIS, ASSIGNOR TO ILLINOIS MALLEh IRON COMPANY, OF CHICAGO, ILLINOIS, A CORPORATION OF ILLINOIS.

PIPE-UNION.

Specification of Letters Patent.

Application filed August 9, 1901.

i To all whom it may concern:

Be it'known that I, ANTON G. ANDERSON, a citizen of the United States ,.residing at Chicago, in the county of Cook and State of I111- nois, have invented a new and useful Imrovement in Pipe-Unions, of which the folowing is a specification.

My invention relates to certain new and useful improvements in pipe unions and 1s fully described and explained in the speclfication and shown in the accompanying drawing, in which:

Figure 1 is an elevation of my improved union, and Fig. 2 is a longitudinal section in the line 2 of Fig. 1.

Referring to the drawings, A is the spud of my improved pipe-coupling or union, the

same being internally screw-threaded at one end and externally screw-threaded at the other, as is common practice. The spud A has at its externally screw-threaded end an internally-projecting annular beada the outer surface of which is given a conical form, as illustrated.

B indicates the tail-piece of my improved pi e-coupling or union, the same being interna ly screw-threaded at one end in the usual Way and having at its opposite end a shoulder 6 ada ted to engage with a ring or nut O. The nut O is internally threaded at its opposite end to engage the external threads upon the spud A.

The tail-piece B has at its lower end an inwardly-extending web I) at the inner edge of which is a cylindrical flange b concentric With the axis of said tail-piece. The web 6 also has near its outer margin ashoulder b the inner surface of which is conical in form, so that between said shoulder and the flange b isformed an annular channel the inner surface of which is cylindrical and the outer surface of which is conical. In practice the spud, nut and tail-piece will all be construct' ed of iron in the usual way. A ring D, preferably of brass, is inserted in the annular channel formed between the shoulder b and the flange b, the said ring having its two outer edges beveled off to form short conical surfaces of the same inclination as the surfaces upon the shoulder b and upon the flange a upon the spud. The ring is of such size as to engage only said two conical surfaces and the flange 1) and not to rest against the transverse sob 6 whereby two ti ht ground joints are secured. The ring is a so necessarily of such size as to keep the spud and tall-piece normally separated so that there is a smal annular space within the nut O and between the said spud and tail-piece.

By the above construction a union is secured whlch is exceedingly efficient as far as t1ght ness, which is the first prime requisite of a union, is concerned. It can also be constructed very cheaply, the principal parts involving weight being all of iron. The use of the b ess ring renders the union non-corrodible in character, so that theparts can readily be separated even after many years of use, andt e particular construction andarrangement shown and described is such that the brass ring can be used for this purpose without in any way affecting the tightness of the unlon.

I realize that considerable variation is possible in the details of this construction Without departing from the spirit of my invention, and I do not intend, therefore, to limit myself to the-specific form herein shown and described. I

I claim as new, and desire to secure by Letters Patent:

1. The combination with an iron nut, spud and tail-piece, the spud and tail-piece having conical seats opposed to each other, of a brass ring tapere at its outer edges only to provide bearing surfaces to fit said conical seats and held in place between said spud and tail-piece.

2. The combination with an iron spud, nut

and tail-piece, the spud having a conical" seat and the tailiece having an annular channel opposed t ereto, one side of which is conical, of a brass ring in the channel of the tail-piece and said ring being tapered at its outer edges only to provide bearmg surfaces to fit said conical surfaces. I

3. The combination with an iron spud having a conical seat and an iron tail-piece having a transverselyextending Web with a c lindrical flange at its inner margin and a sfioulder presenting a conical surface opposed to the conical seat upon the spud, of an iron nu't holding the s ud and talliece together, and a brass ring eld by the s oulder and flange of the tailiece out of contact with the web and presse against the conical seat on the spud.

4. The combination with an iron tailpiece having a transverse web flan ed at its inner margin and channeled outsi e of said Binge, said channel having a conical outer I ring being held by the flange and th ut Irargin; of an iron spud having a conical i conical margin oi the channel out oi contact 10 surface opposed to said cokriiicaldsurfalce, an 1 with the bottom of the channel.

iron nut holdin the s u an taiiece T together, and a iirass rin g lying Within said Ah ANDERSON channel and having surfaces to conform to i In presence of the conical seat on the spud and the conical J. H. LANDES,

surface of the channel of the tail-piece the R. A. SCHAEFER. 

